Reliability and Validity

What is the purpose of using different types of data in research?

• To increase the complexity of the study

• To strengthen the validity and reliability of findings

• To reduce the cost of research

• To simplify data analysis

What does reliability mean ?

• Consistency

• Variability

• Randomness

• Unpredictability

If two people measure the same waist using a measuring tape, what would indicate that the measurement is reliable?

• The results should be the same

• The results should be different

• The results should be random

• The results should be unpredictable

How is reliable data described in the lecture?

• Steady, not "moody"

• Erratic, not consistent

• Variable, not steady

• Unpredictable, not reliable

What is the reliability of a grading rubric?

• It ensures consistency in grading across different students and graders.

• It eliminates the possibility of grading errors completely

• It removes the need for teacher judgment in assessment.

• It allows for more flexible and individualized grading.

What should educational research produce to guide policy and practice?

• Innovative teaching methods

• Dependable findings

• Increased student participation

• More diverse curricula

What is the significance of inter-rater reliability in using checklists for educational assessments?

• To ensure uniformity in evaluations by different raters

• To monitor the development of students over time

• To evaluate the effectiveness of instructional strategies

• To assess the impact of educational initiatives

In the context of inter-rater reliability, what indicates that the observation method is reliable?

• Different ratings from teachers

• Similar ratings from teachers

• High student engagement

• Low student engagement

What does high internal consistency in a questionnaire indicate?

• The questions assess different concepts.

• The questions are unrelated.

• The questions assess the same concept.

• The questions are difficult to answer.

What is an example of parallel reliability in education?

• Using a single version of a test.

• When students receive similar scores regardless of the rubrics used.

• Changing the rubric for each student.

• Using different rubrics for different subjects.